If sin x=1/2, and 0 < x < π/2, what is cos(x−π/6)?
1 answer:
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The correct question in the attached figure
we know that
the scale is 1 in (scale drawing)= (1/2) foot (actual)-----> 1/(1/2)=2 in/ft
[scale]=[scale drawing]/[actual]
then
[scale drawing]=[scale]*[actual]
therefore
for <span>actual width of the car 8 ft
</span>[scale drawing]=[2 in/ft]*[8 ft]=16 in
<span>
the answer is 16 in
</span><span>
</span>
we know that
the scale is 1 in (scale drawing)= (1/2) foot (actual)-----> 1/(1/2)=2 in/ft
[scale]=[scale drawing]/[actual]
then
[scale drawing]=[scale]*[actual]
therefore
for <span>actual width of the car 8 ft
</span>[scale drawing]=[2 in/ft]*[8 ft]=16 in
<span>
the answer is 16 in
</span><span>
</span>
You can use for example 
. I have graphed it there : <u>https://www.desmos.com/calculator/othuxmqqyj
</u>A and B : f is always decreasing except in 4 where it is not defined
C,D :
</u>A and B : f is always decreasing except in 4 where it is not defined
C,D :